Biology 9700 · AS & A Level · The gas exchange system

The gas exchange system — practice question

In chronic obstructive pulmonary disease (COPD), the movement of air through the airways is reduced. Which statements account for the reduced airflow?

  • A1, 2, 3 and 4
  • B1, 2 and 3 only
  • C1, 3 and 4 only
  • D2, 3 and 4 only

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